package com.zsl.xue8;
import android.app.Activity;   
import android.hardware.Sensor;   
import android.hardware.SensorEvent;   
import android.hardware.SensorEventListener;   
import android.hardware.SensorManager;   
import android.os.Bundle;   
import android.os.Handler;   
import android.os.Message;   
import android.os.Vibrator;   
import android.util.Log;   
import android.widget.Toast;   
   
/** 
 * 安卓晃动手机监听--“摇一摇” 
 *  
 * @author  
 *  
 */   
public class TestSensorActivity extends Activity {   
   
    private SensorManager sensorManager;   
    private Vibrator vibrator;   
   
    private static final String TAG = "TestSensorActivity";   
    private static final int SENSOR_SHAKE = 10;   
   
    /** Called when the activity is first created. */   
    @Override   
    public void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);   
        setContentView(R.layout.list);   
        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);   
        vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);   
    }   
   
    @Override   
    protected void onResume() {   
        super.onResume();   
        if (sensorManager != null) {// 注册监听器   
            sensorManager.registerListener(sensorEventListener, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);   
            // 第一个参数是Listener，第二个参数是所得传感器类型，第三个参数值获取传感器信息的频率   
        }   
    }   
   
    @Override   
    protected void onStop() {   
        super.onStop();   
        if (sensorManager != null) {// 取消监听器   
            sensorManager.unregisterListener(sensorEventListener);   
        }   
    }   
   
    /** 
     * 重力感应监听 
     */   
    private SensorEventListener sensorEventListener = new SensorEventListener() {   
   
        @Override   
        public void onSensorChanged(SensorEvent event) {   
            // 传感器信息改变时执行该方法   
            float[] values = event.values;   
            float x = values[0]; // x轴方向的重力加速度，向右为正   
            float y = values[1]; // y轴方向的重力加速度，向前为正   
            float z = values[2]; // z轴方向的重力加速度，向上为正   
            Log.i(TAG, "x轴方向的重力加速度" + x +  "；y轴方向的重力加速度" + y +  "；z轴方向的重力加速度" + z);   
            // 一般在这三个方向的重力加速度达到40就达到了摇晃手机的状态。   
            int medumValue = 19;// 如果不敏感请自行调低该数值,低于10的话就不行了,因为z轴上的加速度本身就已经达到10了                
        if (Math.abs(x) > medumValue || Math.abs(y) > medumValue || Math.abs(z) > medumValue) {   
                vibrator.vibrate(200);   
                Message msg = new Message();   
                msg.what = SENSOR_SHAKE;   
                handler.sendMessage(msg);   
            }   
        }   
   
        @Override   
        public void onAccuracyChanged(Sensor sensor, int accuracy) {   
   
        }   
    };   
   
    /** 
     * 动作执行 
     */   
    Handler handler = new Handler() {   
   
        @Override   
        public void handleMessage(Message msg) {   
            super.handleMessage(msg);   
            switch (msg.what) {   
            case SENSOR_SHAKE:   
                Toast.makeText(TestSensorActivity.this, "检测到摇晃，执行操作！", Toast.LENGTH_SHORT).show();   
                Log.i(TAG, "检测到摇晃，执行操作！");   
                break;   
            }   
        }   
   
    };   
} 